Super Bowl XLVII: Spectacle Set to Begin in New Orleans

The exterior of the Mercedes-Benz Superdome is seen before the start of Super Bowl XLVII between the San Francisco 49ers and the Baltimore Ravens on February 3, 2013 in New Orleans.

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There's more than just a trophy on the line for Superbowl XLVII -- as two sibling head coaches are pitted against each other for the first time, while one of the NFL's greatest players turns in his final performance, and then there's the question on everyone's minds:

The game will be played in the rebranded Mercedes-Benz Superdome, the same venue that nearly eight years ago housed refugees from Hurricane Katrina in squalid conditions, becoming a symbol of the storm's fury and the human suffering that followed in its aftermath.

Today, 75,000 ticketholders will pack the stadium, marking a moment of triumph for the city.

The two, with just 15 months difference in their ages, grew up in Ann Arbor, Mich., and both began their coaching careers working for their father Jack, a college coach at Western Kentucky and later at Western Michigan. The brothers are close and consider the matchup, dubbed by sportswriters as the "HarBowl" a bittersweet moment for the family, knowing one will lose.

"It's probably a little tougher emotionally," John Harbaugh said at a press conference last week. "It's a little tougher just from the sense of I don't think you think about it when you're coaching against somebody else; it's more about the scheme and the strategy. There's a little bit of a relationship element that's more strong than maybe coaching against someone else.

"I'll have a better answer for you after the game," he said. "I've never been through this before. This is all new."

The game is expected to be the last for Ravens linebacker Ray Lewis, 37.

The former Superbowl MVP and a two-time defensive player of the year, has made headlines on and off the field during his 17-season career.

In 2000, a fight broke out after an Atlanta Super Bowl party, leaving two men dead. Lewis faced double murder charges, however in a plea agreement, the charges were dropped. Lewis pleaded guilty to obstruction of justice and was sentenced to probation. The case against his two co-defendants fell apart and the murders remain unsolved.

Most recently, Lewis was reported to have used deer antler spray and pills, a substance banned by the NFL, to help heal a torn triceps. Lewis has denied taking any illegal substances.

Hype Surrounding Beyonce, Commercials

For non-football fans, today has been dubbed the Beyonce Bowl.

The megastar lip-synced on President Obama's second inauguration, she said in a press conference on Thursday, because she didn't feel fully prepared.